Technology Strategy and Transformation
Clarify technology direction, investment priorities, operating models and transformation roadmaps by connecting strategic ambition with executable change.
Explore Technology StrategyExecutive Technology Advisory
Navigate complex technology transformation with confidence.
Executive advice for critical platform modernization, AI adoption, engineering transformation, data strategy and operational resilience.
Strategic perspective grounded in enterprise delivery.
Technology transformation becomes difficult when legacy complexity, business priorities, architecture, talent and execution must move together.
Drawing on more than 20 years of technology leadership, I help leaders clarify consequential decisions and turn transformation goals into practical priorities.
Advisory Focus
Independent counsel for consequential technology decisions.
Capital Markets and Critical Platform Modernization
Evaluate and modernize critical platforms while addressing architecture, resilience, migration risk and operational complexity.
Explore Platform ModernizationAI, Data and Cloud Transformation
Move from disconnected experimentation toward practical enterprise adoption grounded in data readiness, governance, engineering workflows and measurable value.
Explore AI, Data and CloudEngineering Leadership and Operational Resilience
Strengthen engineering organizations, accountability, delivery governance, platform ownership and the resilience required for dependable execution.
Explore Engineering LeadershipSignature Specialization
Modernizing critical platforms without losing sight of the business they serve.
Capital markets transformation demands more than technical modernization. Platforms must respond to evolving business needs while preserving performance, control, data integrity and operational resilience.
Drawing on extensive professional experience across global markets technology, I advise leaders evaluating platform strategy, legacy modernization, architecture, operating models, vendor choices and transformation sequencing.
- Trading and markets technology
- Risk, position and reference data platforms
- Platform rationalization and modernization
- Scalability, performance and resilience
- Build, buy and vendor decisions
- Migration strategy and execution risk
Advisory Perspective
Experience is most valuable when it improves the next decision.
My approach brings together business context, technology strategy, organizational readiness, governance, risk and execution. It is designed to help leaders see the situation clearly and make practical choices without relying on product selling or a predetermined implementation agenda.
Explore Experience and PerspectiveWays to Engage
Advisory shaped around the decision at hand.
Strategic Assessment
A focused independent review of a transformation, critical platform, operating model, AI or data opportunity, or technology risk concern.
Executive Advisory Retainer
Ongoing independent counsel for senior executives and transformation sponsors navigating major technology decisions and organizational change.
Executive Advisory Session
A focused confidential discussion concerning a defined strategic question, second opinion or executive decision.
Board, Due Diligence and Expert Engagements
Selective advisory for boards, private equity, consulting firms, expert networks and qualified research organizations.
Transformation succeeds when strategy, architecture and execution are treated as one leadership problem.
Modern platforms alone do not create transformation. Sustainable change requires clarity about the business outcome, disciplined technology choices, accountable engineering leadership and an operating model capable of carrying the change forward.
Read Insights →Latest Perspective
Engineering Leadership · Operating Models · Transformation
Engineering Transformation Begins With Decision Rights
New structures, tools and delivery methods cannot compensate for unclear ownership. Strong engineering organizations make it explicit who decides, who owns the platform and how business priorities become accountable execution.
Read Perspective →About Arun
Executive judgment grounded in more than two decades of technology leadership.
Arun Arunachalam is a technology executive and advisor with experience spanning financial services, global markets, capital markets technology, enterprise platforms, data, cloud, AI enabled transformation and operational resilience.
His perspective is shaped by working across business, technology, architecture, operations and governance in complex financial environments.
Facing a consequential technology decision?
If you are evaluating a critical platform, transformation program, AI or data strategy, engineering operating model or resilience concern, begin with a confidential inquiry.
Discuss an Advisory NeedQualified inquiries receive a personal response. Please do not submit confidential, proprietary or material nonpublic information.